Answer:
72 degrees
Step-by-step explanation:
Congruent supplements Theorem.
 
        
             
        
        
        
Answer:
isosceles 
x=14
Step-by-step explanation:
isosceles because of the two I symbols on the triangle
x+5=2x-9
5+9=2x-x
14=x
 
        
                    
             
        
        
        
Answer:
2 cows and 5 chickens.
Step-by-step explanation:
NOTE: This will be solved using simultaneous equations. 
Let x = cows and y = chickens
1. form two equations 
4x + 2y = 18 ... (1)
x + y = 7 .... (2)
2. make y (or x) the subject of one equation
x + y = 7 
y = 7 - x ... (3)
3. Substitute (3) into (1)
4x + 2( 7 - x) = 18
4. solve for x
4x + 14 - 2x = 18
2x = 4
x = 2
5. Now substitute x value into equation (2)
x + y = 7
2 + y = 7
y = 5 
∴ cows (x) = 2
chickens (y) = 5
 
        
             
        
        
        
I think it's the Multiplication Property of Equality.
Hope this helps you! :)
        
                    
             
        
        
        
Step-by-step explanation:
64 bro